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Journal Article

The function-dominance correlation drives the direction and strength of biodiversity–ecosystem functioning relationships

Authors
/persons/resource/michael.crawford

Crawford,  Michael
Potsdam Institute for Climate Impact Research;

Barry,  Kathryn E.
External Organizations;

Clark,  Adam T.
External Organizations;

Farrior,  Caroline E.
External Organizations;

Hines,  Jes
External Organizations;

Ladouceur,  Emma
External Organizations;

Lichstein,  Jeremy W.
External Organizations;

Maréchaux,  Isabelle
External Organizations;

May,  Felix
External Organizations;

Mori,  Akira S.
External Organizations;

Reineking,  Björn
External Organizations;

Turnbull,  Lindsay A.
External Organizations;

Wirth,  Christian
External Organizations;

Rüger,  Nadja
External Organizations;

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25770oa.pdf
(Publisher version), 2MB

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Citation

Crawford, M., Barry, K. E., Clark, A. T., Farrior, C. E., Hines, J., Ladouceur, E., Lichstein, J. W., Maréchaux, I., May, F., Mori, A. S., Reineking, B., Turnbull, L. A., Wirth, C., Rüger, N. (2021): The function-dominance correlation drives the direction and strength of biodiversity–ecosystem functioning relationships. - Ecology Letters, 24, 9, 1762-1775.
https://doi.org/10.1111/ele.13776


Cite as: https://publications.pik-potsdam.de/pubman/item/item_25770
Abstract
Community composition is a primary determinant of how biodiversity change influences ecosystem functioning and, therefore, the relationship between biodiversity and ecosystem functioning (BEF). We examine the consequences of community composition across six structurally realistic plant community models. We find that a positive correlation between species’ functioning in monoculture versus their dominance in mixture with regard to a specific function (the “function-dominance correlation”) generates a positive relationship between realised diversity and ecosystem functioning across species richness treatments. However, because realised diversity declines when few species dominate, a positive function-dominance correlation generates a negative relationship between realised diversity and ecosystem functioning within species richness treatments. Removing seed inflow strengthens the link between the function–dominance correlation and BEF relationships across species richness treatments but weakens it within them. These results suggest that changes in species’ identities in a local species pool may more strongly affect ecosystem functioning than changes in species richness.